【摘要】 铁电隧道结是一种具有量子隧穿效应和电致电阻效应的新型隧道结。从铁电隧道结的基本理论出发,针对势垒层和电极材料选取的角度详细介绍了铁电隧道结的研究成果,揭示了材料选取对隧道结中铁电性保持的重要影响,含铅的钙钛矿型氧化物作为铁电势垒层是目前研究的重点。铁电隧道结的研究正向着无铅材料及多铁隧道结方向发展。最后讨论了铁电隧道作为存储器单元应用的可能性与优点。更多还原

【Abstract】 Ferroelectric tunneling junction(FTJ) is a new tunneling junction which possesses electroresistance effect. Based on the theory of the FTJs,the recent research results on the barrier layer and the electrode in the FTJs are introduced and the influence of the selection of materials on the ferroelectricity in the FTJs is deduced. Lead-based perovskite oxides are currently researched for the ferroelectric barrier layer in the FTJs. Studies on the FTJs are toward lead-free materials and multi-ferroelectric tunnel junctions. The possibility and advantages of applications of FTJs as binary data storage media are also discussed.更多还原